Furnace-door frame.



3. NAISMITH.

FURNACE DOOR FRAME.

APPLICATION mio SEPI. 9,'1913.

Patented.) une 8, 1915,

2 SHEETS-SHEET l.

S. NSMH'H.

FURNACE DOOR FRAME,

WPUCMION men sun'. s. ma.

atwtedJune 8, KHS.

2 SHEETSMSMEET 2.

if STATES ATENT FFG.

SAMUEL LTSE'H, DE EICAGU, ILLINOIS.

sommes-noon rams.

Patented June 8, l.

Application led September 8, 1913. Serial No. 7$8,582.

To all whom t may consom:

Be it known that l, SAMUEL llArsMi-TH, a citizen of the United States; residing at Chi cago, in the. county of Cnlr and State of Illinois, have invented new and useful Improvements .in Furnace-Door Frames,l of 'which the following is n specilication.

My invention relates to furnace doorframes and has for its object a frame of this oless of durable and etiicicntfconstruction.

A further object is to provide a frame so eonstructed as to dispense with any brick or varch Work between the upper portion of the doonfrmne und vskew-bziclo n A further Objectis@ provide e. device of this class so designed as to eiliciently protect f the buck-stoves or, framework; around the door opening and so constructed that the vse parts subject to the intense heat may` be quickly removed and replaced.

A further object is to construct device of this class of a plurality oi'. parte so designed that :inyonehf seid parts can be easily andquickly removed without :ideetin the others. l

glille above and other features of novelty, advantages and capabilities of my invention. will become apparent from a detailed description of the drawings, in which- Figure 1 is s vertical section showing one form of my improved door-frame applied to an open hearth furnace. Fig. 2 is a. front elevation-of tlie same partly in section. Fig. 3 is a. longitudinal section of the door-frame, and Fig. l is a. front elevation showing n modified forni of my invention.

Referring to the drawingsin detail, l have used the reference numeral .10 to designate the arch roof of a furnace of the ordinary construction, 11 the skew-back, 12 the dooropening and I3 the bottom of the furnace. The furnace is of the usual construction provided with buck-stoves extending upwardly at the sides of the furnace, two of which Steves are shown in the drawings is extendingr upwardly past the door opening adjocent thereto and are designated with the ref erence numeral 14. Extending the lull wlength o1? the furnace across the door opcn- Mount-ed within the opening 12 is a. rectangular shaped water cooling frame and in the preferred form shown in Figs. l, 2 and 3, consisting of an upper portion extending across the opening sndforming a lintel 16, i the upper surface of which is adjacent to the skew-hack l1) and two legs 19 adjacent to the sides of the door opening. The upper surface of the lintel 16 is placed adjacent to and covers the lower surface of the skewback 11 as best shown in Fig. 1 thus eliminating an srch or wall of brick liet-Ween such lintel and the skew-back. By this conu struction the lintel 16 can be readily and quickly removed without damaging thefurnace or without necessitatingl the remove-l of a wall and further it fully protects the skewbaclr and skew-back channel 15 from the intense heet within the furnace. The lintel 16 of this frame is provided with two 'npwurdly extending parallel Walls 12 and 17A, the wall 12A being positioned adjacent to the channel 15. The wall 17 isprovided at each end with a flange 18 which flanges are secured to the buckstaves 14 by any suitable means, such as the bolts shown for detach-A and extend inwardly into the rabbeted side Wells of the opening. as best shown in Fig. 3. These-legs are also provided with a flange 18 which is secured to the buck stoves by any suitable means such -as the bolts shown for securing said legs in place. By extending the legs into -the wall of the opening, as shown in Figz the lire or heat Within the furnace is prevented from escaping between such legs and lwall, thus eiciently protecting the buck-staves. In the event one of these legs or the lintel of theframe should become burnt out or otherwise damaged, such part or parts can be easily and quickly removed by simply j removing the bolts which connect that part with the buckstaves. Oftentiines it may be necessary to remove parts of this door-frame lwhile still heat-cd to a very high degree. l have, there- `fore, provided the flanges on the legs 19 llO opening through which opening connection is made to a crane or other means ,for removlng s aid lintel.

In the-form shown in Fig. 2th?, water is supplied to the intake pipes 22 from the main pipe 23 and thence travels downwardly into the lower portion ofthe legs 19 and ontwardly at the upper end through the outlet pipe 24 into the lintel las indicated by 'the arrows. The lintel 16 may also be supplied direct from the supply pipe23 through the 4pipe 25 by properly ad]usting the water cock. l

In the modified form shown in Fig. 4, the

water cooling frame is all made in one piece and with this construction, the piping is somewhat simplified. While I have shown this water cooled frame made in one and three pieces, it can be made in a plurality of parts to meet conditions at the various mills and can be made ont of cast iron, cast steel,

in attendance on the furnace.

boiler plate, bronze, copper or any other suitable metal alloy. The frame is shown as open at the top, that is, the upwardly extending Walls of the lintel 16 are not closed. With this construction any steam that may begenerated in the frame is allowed to escape and can lbe readily seen by the person However, it is to be understood that these Walls may be closed. at the top or made in any other suit- The skew-black or portion of a' fni'nace exltending across the door opening and supone embodiment of my invention, it is to be understood that various changes and modifications may be made by those 'skilled in the art, without departing from the spirit of my inienltion, as defined by the appended claims.

c a1m:-

1. The combination with a furnace provided with a door opening, the vertical walls of said opening being rabbeted at the outer corner portions thereof, of a water-cooledl frame having hollow vertical members which engage the rabbeted portions of said walls, substantially -as described.

2. The combination with' a furnace provided with a door opening and With vertical frame members at each side of said opening, of a watercooled frame having-hollow leg and lintel portions surrounding three sides of said opening, and said portions having outwardly projecting flanges which are removably secured to said frame members, substantially as described.

3. A furnace door frame having a lintel portion open at its top and formed with interior partition walls, said Walls having openings therein, substantially as described.

In witness whereof, I hereunto subscribe my name to this specification in the presence of two WitnessesL SAMUEL' NAISMITH.

Witnesses: Y

A. L. Bonn,

WM. MrLLwAnD. 

